Tire-valve.



T. P. BORDN.

URE VALVE. APPLCATIONFILED N0\l.28, 1914- RENEWED FEB. 8| 1916.

-Pamea Mar. 28, 1916 nvevxiofc Th amas P Bmde n Mmmm rennes i?. nonnen, oi" New Venir, nssreiron ro nemin- Boennn new, on

' f rene., n. s. t

.application ed November 2B, 3.9M, Serial No. SM5

To all whom 'it may concern:

Be it known that l, Tiroivrns 'i3'. Bomen. a citizen of the United Statese residing ai New Yorln in the County of New York and State of New York, have invented cernin new anni useful lmprovemens in Tire Valves, of which the following is e speeiiication.

My invention relates te i pneumatic valves for vehicle the valve is or may be contained Jit' e nipple or tube which is distinct and seperable from tbe ordinary air tube, the leter being the tube which is iirecllj/ etbeolieei to the tire, or the inner tube or" tbe seine; whereby such nipple, with tbe Valve an its' related parts, may be removed from the fixed air tube for ecljustinentor repair of the valve, without the necessity of removing the inner tube from the Wbeel or separating the air tube from the tire.

TheY invention relates further to liet eless of valves in which tbe sealing pressure is not dependent upon the air pressure wiebin the tire, but is positively eppliedio tbe valve "Lo 'force it, i @be seme clireeion as the nir pressure, against 'its valve sent. 'lliis mechanical valve seelinp pressure is applied by ineens of n screv'-tl1renflecl Cep which abuis against tbe outer were of lie nipple or e shoulder thereof, and engages tbe 'valve stem by its screw t'nreari, whereby tbe tnrning of the can draws alle valve oniwerrl to its seat. Such action is important for malringT the valve Completely air tiebt. When air pressure alone is relied upon izo seal the valve lle Lnlcum or other (lust jfrom wiliin the inner tube oi the tire is ineviebl'v blown ont-werd frein time to time so as ro ioflge bef tween the valve and its sent. :incl bre tbe air tight closing of tbe valve enel slow leak. Y

It is 'the obiect of my ini'proe'mene. among otber things, to provide menne ier holdingr tbe valve stem 'from ronion'flnring the meclinniml Closinq or" tbe valve. 'o secure the rubber or other soft valve pecking removably in plane on tbe valve sind to non# strnft the valve and sent so l'in't lie 'melring will be compressed to tbe best advantage for tbe 'herfertion of vits sealing action.

Wifh these obefts in view mv inventinn consists in the parts and combin'itions liereof hereinafter set forth and claimeiL irovernens in iresin which pecica'tien of Letters Feiten?.

ive-rented Pier., 25?),

Renewed 8, wie. Serial No. 7?,

il, also eensists in ell other new fee of inipioveinen, which may be found izo be comprised in the structure oi die seid Valve enel co-ecting parte n order so nielre the invention more clearly understooci have VSfiiown in the aosenie into praeticel eii'eofwitbon'b limiting tlie improvements in their useful :ip-aliene bien5 to elle pericular construction which, for 'tbe 'purpose of ezzplzinesion, beve iliusibreed.

In lle said vFigure i is e longitninal seemonel View' oi libe tire vnlve anal Anor'cion ofthe nir "sube, tbe valve beshown as closed. Fig. 2 is e similar. View, the valve beine; shown Opern Fie. 3 is boiiorn end View of tbe een. Fig'. i is e sirle view oi the same, lim ie e boi;- toin enel vien' oithe nipple. sie'. 6 is e 'top pien View of the nipple. Fie. E i.; e'plnn View oi tbe Velv peeking. S is e side` View o? tbe semeL ne. 9 is e View o lie valve stein witbone pecking. l@ is e isop 'bien View of said valve enel sein.

.ne to lie drawings, )l inieees ses air tube Ev lier is eleinnerl or otlierwi +bis air tnbe being externally screw three@ ed for lie usuel. nini. by 'which 'it ma? be elnmneo *eo be Wheel rim. enel nreiefebly ieiene so ibut i'b me? be held from torn:-

Tbe nir tube is internally' screw tbreeclecl ai its enter enel es inclieaecl et 3 "nbni the nipple fine be screwed into tbe seine bj.' its inner etre-email?! screw Salumerie@ member 5. l?? i 'ibis purpose the member is provid-eel Wifiii e'eoniefil or sliebl be# nererl screw il reel (l. and the screw tirreno. 3 is eorresmnnine'ly innere@ oinwnrllv. Wberebv tbe nim-:le mail be serewefl into place in ilienir tube nilzb Werlqinn netion so es 'Ego -form sin nir tight ioin. bove or at tbe 'envier sifle of sbe member 5 lie minnie is iormefl Willi an enlargement 'i7 Wbioli is exigernallv iieenell or not shaped so thai-it new be burned bi e wrencb. All tben outer sirle of tbe enlereemeni; 7 lbe nipnle formen with nn extension 8 baring en exi `'cernnl sere-` thread 9 for the nttwbmen of en; nir mimo eonnlinff or tube. lv the en# largement 7 tbe nipnle is orm'iflecl jvitb nn internal shoulder 10 which is normally compenying drawing ineens "er carrying the I screwed tightly against the outer end of the air tube, and with anvexternal shoulder 11. A soft rubber or other packing 12 may be applied between the shoulder 10 and the air tube, but this is not ordinarily necessary. At the inner end the nipple is formed on its under or inner side with a valve seat 13. This seat may consist of the annular end of the member 5, but is preferably formed by a circular projection or rim 15 to engage and be indented in, or to circumferentially confine, the valve packing 16. The nipple is formed with inward projections 14- arranged at or near the valve seat, between which projections are formed spaces or grooves 31.

The valve proper is shown at 17, consistin'g of a metallic head attached to a stem 18, the latter extending within the nipple through a space 19 between the ends of the projections 14. The outer face of the valve 17 is made slightly conical, as shown at 20,

so as to spread the packing 16, which is preferably of soft rubber, outward into engagement with the rim 15. The stem 18 is provided with one or more tins or ribs 21, preferably three in number equally separated 'around the stern, whereby the stem is centered andv its outer free end kept substantially in the middle of the nipple. rlhis enables the stem to be readily engaged by the cap as hereinafter described. The tins 21 do not extend to the valve 17 but terminate a little above the same, so as to leave a space 22 to hold the'packing 16, the inner lends of the fins 21 serving as 'shoulders 32 .the stem 18, and with an annular flange 27 -which excludes dust from the air passage and .abuts against the shoulder 11 of the nippleto draw the valve and packing 16 tightly against the valve seat. The said shoulder Y11 is formed with small angular teeth 28 which extend 'substantially radially, and are engaged by `corresponding "teeth 29 ori-the inner end of the flange 27,

`whereby the cap is prevented from unscrewing excepting when it is intentionally and forcibly turned by. the operator'.

30 is a pin or shoulder on the inner face of the air tubewhich holds the valve near to its seat and maintains the fins in engagement' in the grooves 3] when the valve stem .is released from the nipple, but allowsthe valve to drop .sufiently away from the nivaeea same to admit air when the tire is being pumped up. After the tire is filled the internal air pressure temporarily closes the valve, after which. the valve is made air tight by the cap as above explained. The projections 14 constitute a means, together with the fins 21, for preventing the rotation of the valve stem, having formed between them said grooves 31 in which the said fins fit in such manner as to allow. of the longitudinal play of the stem. These grooves are more than three in number, to allow free passage of air into or from the tire tube when the valve is open.

While the described valve is a perfect air seal when closed, it permits very rapid passage of air, and a quick operation in pumping up or dellating the tire. By providing the valve stem with more than one or two fins, that is to say by arranging the tins polygonally, the free end of the valve stem is centered and no ditliculty is experienced in catching it with the cap to seal the valve.

What I claim is:

1. ln a valve for tires the combination, of a nipple adapted for separate attachment to an air tuba the said nipple being formed at its inner end with inward projections having between them grooves 3l and a valve seat, a valve having a stem extending past the said projections into the interior of the nipple, the saidstein having fins 21 provided with shoulders 32 at a distance from the face of the valve, a packing on the face of. the valve retained by the said shoulders, and a cap bearing against an outer part of the nipple and having a screw thread engaging the valve stem, substantially as specified.

2. ln a valve for tiresthe combination, of a nipple adapted for separable attaehment to an air tube, the said nipple being formed at its inner end with a valve seat and having an external shoulder formed with teeth 28, avalve having a stem extend ing through the valve seat into the interior of the nipple, the said stem having a screw thread, a soft elastic packing on the face of the valve, means for preventing the rotation of the valve stem, and a cap having teeth 29 bearing against the said teeth 28 and having a screw thread engaging the valve stem,`sub stantially as specified.

3. ln a valve for tires the combination, of a nipple adapted for' separate attachment to and removal from an air tube, the said nipple being formed on ,the interior of its inner end with inwardu'f'rojections having rooves between them, and formed on its inner end with a valve seat; a valve having a screw threaded stem extending past the said projections into the interior of `the nipple; the said stem having fins adapted to engage in the said grooves; a packing on' the face of the valve opposite tothe said valve sent; a cap bearing against the outer put In testrnon whereof I ax my signature of the mpple und hnvlng a screw thread xn presence o two Wltnesses.

engaging the valve stem; and means which THOMAS P. BORDEN. muintuln the engagement o the fins 1n Saud I Wltnesses: f grooves when the vulve stem is released H. N. LOW,

from the nipple; substantially as specied. N. CURTIS LAMMOND. 

